import config from './../../config.js';
import Dialog_class from './../../libs/popup.js';
import Base_layers_class from './../../core/base-layers.js';
import Vintage_class from './../../libs/vintage.js';
import alertify from './../../../../node_modules/alertifyjs/build/alertify.min.js';

class Effects_vintage_class {

    constructor() {
        this.POP = new Dialog_class();
        this.Base_layers = new Base_layers_class();
        this.Vintage = new Vintage_class(config.WIDTH, config.HEIGHT);
    }

    vintage() {
        var _this = this;

        if (config.layer.type != 'image') {
            alertify.error('图层必须是图像，将其转换为栅格来应用此工具。');
            return;
        }

        this.Vintage.reset_random_values(config.WIDTH, config.HEIGHT);

        var settings = {
            title: 'Vintage',
            preview: true,
            effects: true,
            params: [
                { name: "level", title: "Level:", value: 50, range: [0, 100] },
            ],
            on_change: function(params, canvas_preview, w, h, canvas_) {
                _this.change(canvas_, params);
            },
            on_finish: function(params) {
                window.State.save();
                _this.save(params);
            },
        };
        this.POP.show(settings);
    }

    save(params) {
        //get canvas from layer
        var canvas = this.Base_layers.convert_layer_to_canvas(null, true);
        var ctx = canvas.getContext("2d");

        //change data
        this.change(canvas, params);

        //save
        this.Base_layers.update_layer_image(canvas);
    }

    change(canvas, params) {
        var level = parseInt(params.level);

        this.Vintage.apply_all(canvas, level);
    }

}

export default Effects_vintage_class;